// Find the max number of this array using LINQ
 Console.WriteLine("Find the max number of this Array using C# build in function { 1,2,3,4,5,6,7,8,9}");
 int[] array = new[] { 1,2,3,4,5,6,7,8,9};
 var result= array.Select((n, i) => new { Value = n, Index = i }).FirstOrDefault(s => s.Value == array.Max());
 Console.WriteLine($"Max Number Of this Array:{result?.Value} and index no: {result?.Index}");